Profit Sharing Plan - Additional Information (Detail) (Deferred Profit Sharing [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Profit Sharing [Member]
Profit Sharing Plans [Line Items]
Percentage of vesting increased after sixth year of employment	100.00%
Amount expensed	$ 235,000	$ 247,000	$ 234,000